Samantha A. Smith (born 4 November 1969; age 55) is an actress who played the Eldreth Leader in the Star Trek: Strange New Worlds first season episode "Strange New Worlds", and voiced Huur'A in the Star Trek: Prodigy episode "All the World's a Stage".
She is best known for her recurring role as Mary Winchester in 37 episodes of Supernatural between 2005 and 2019. The series also featured Mark A. Sheppard, Osric Chau, Lisa Berry, and Jeffrey Dean Morgan in recurring roles.
She also appeared in guest roles on series such as Seinfeld (starring Jason Alexander, featuring Heidi Swedberg, Phil Morris and Norman Large), The Pretender (with Cyia Batten), Silk Stalkings (with Charlie Brill and Greg Grunberg), Friends, Family Law (with Gregg Henry, Tina Lifford, Jim Metzler, and Ron Perlman), Nash Bridges (with Mary Mara, Tracey Walter, and Kate Vernon), Dark Angel (with John Savage and Lawrence Pressman, directed by James Contner), NYPD Blue (with Ed O'Ross), Monk (starring Ted Levine), Criminal Minds (with Bill Smitrovich), House, NCIS: Los Angeles (with Gregg Henry, Spencer Garrett, and Miguel Ferrer, directed by Jonathan Frakes), The Mentalist, and 9-1-1.
Her few feature film credits include minor parts on Jerry Maguire (1996, with Jerry O'Connell and Mark Pellington), What Planet Are You From? (2000, with Brian Markinson, Wade Andrew Williams, Rick Avery and Sarah Silverman), Dragonfly (2002, starring Joe Morton and Kathy Bates, with Susanna Thompson, Casey Biggs, Leslie Hope, Heidi Swedberg, Joseph Will, David Doty and Gillian Vigman), and Transformers (2007, with W. Morgan Sheppard, Glenn Morshower, Michael Shamus Wiles, Andy Milder and Robert Foxworth, written by Roberto Orci and Alex Kurtzman).